Antarctic radioactive dating of meteorites

These claims were controversial from the beginning, and the wider scientific community ultimately rejected the hypothesis once all the unusual features in the meteorite had been explained without requiring life to be present.Despite there being no convincing evidence of Martian life, the initial paper and scientific and public attention caused by it are considered to be turning points in the history of the developing science of astrobiology.This diverse collection of asteroids may include primitive objects (that is, early, unprocessed material left over from the accretion or partial accretion of the planets from the solar nebula), but also the disaggregated remains of now destroyed former planetary bodies, some of which had resided much closer to the Sun.There are other known asteroids that do not orbit within the Main Belt (such as various near Earth objects or NEOs), and some of these also could be sources of meteorites.This site has been developed to fill a perceived need for an up-to-date source of accessible information specifically on Martian meteorites for educators, researchers and collectors.

(Contrary to scenes from the movie Star Wars, there now are very large distances between each of the asteroids, but they do get hit by other orbiting objects, or are gradually moved into transfer orbits from which they can be perturbed into Earth-crossing trajectories).

A Martian meteorite is a rock that formed on the planet Mars and was then ejected from Mars by the impact of an asteroid or comet, and finally landed on the Earth.

Of over 61,000 meteorites that have been found on Earth, 132 were identified as Martian as of 3 March 2014 On October 17, 2013, NASA reported, based on analysis of argon in the Martian atmosphere by the Mars Curiosity rover, that certain meteorites found on Earth thought to be from Mars were indeed from Mars.

The most prevalent meteorites found on Earth contain small, partly glassy spheres called chondrules, and such rocks are termed chondrites (of at least 14 different types).

Other meteorites lacking chondrules are called achondrites, and a subset of those are commonly referred to as planetary meteorites.

These stagnant patches are eroded by strong winds, thereby exposing and concentrating meteorites on the ice surface.

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